Chemical enzymes, molecules in blood looks at fluid part of blood - not cellsUse serum - part of blood that doesn't have the coagulation factorsallows to look at enzymes that come from liver, ie. abnormal - something wrong with the liver

Serum vs plasma - we know thisElectrolytes - Sodium (Na), Potassium (K), Chloride (Cl), Phosphorous (P) = can use in diagnosis, ie. increased levels of K involved in contraction of the the heart muscle, - used in euthanization fluid. Injectable bottle with black cap means it can kill you, ie. potassium.Exocrine - delivers enzymes or chemical compounds to another part of the body via a duct. many times it's an enzyme

Endocrine Serology

Has to do with serumTriaditis (gallbladder, duodenum, stomach)Thyroid how to test - thyroid hormoneAdrenal gland - produces hormones that can be measuredEndocrine pancreas - insulin